Device for purifying steam.



C. A. PARSONS. ozvlcf ron umrvma STEAM.

APPLICATION FILED FEI. 3. ISN.

1.. 1 9 l 0.. 2 v. 0 N m mi P.

hw u l Illlf Patented Nov. 20,1917..

2 SHEE'I'rS--SIIEET 2.

C. A. PARSONS.

DEVICE FOR ,PURIFYING STEAM. ArPLlcATloN FILED rss. s. lsu.

' INVENTOR.' arlef! Patmond molmtvs.

f F156.. 1 i

...UNITED l);

f' CHARLES ALGERNON rnnlsons. or" P'oNfm TN-iE. i DEVIQE Fon rumwme'snimimi i 1,247,320, spe'ci'cnnon o'f Lett fminin. i

of' Steam turbines` espeeially in the ease. of

It 1s foundthat sjueh marine installations. corrosive action is almost entire,l dueto salt prineipally iu the. forni 0fach )rltls o' soiliinn unil inarnesiun'i .ruining o i'er with .t l: spamrun inea February a. 1914; .-.sfenai 6.81563 i A ,lig one nniuner. tl

the steam frein the boilers as Sonletilneshappens when salt is allowed to get into the.

boilers through leaky-eondonsers or in some. '.1

other way. The rorrosion' arises from a ehelnioal action on the part of the salts between the steel or east iron-of the. bullies o the. rotor or easingl respectively. and the brass` or copper of the biking blades and rhinuny strips.

lt is also l'olunl that this corrosion is prac tirallj.' limited. at an).Y rate to any serions extent. to the first few rows of blades and dununy strips withwhieh the fresh steam eolnes into eontaetpa" The object of the present invention is to enable this corrosive action to be. avoided.

The invention consists in n sl rainer 4through which the steam passesbefore entering the turbine or otherengiue, the steam in passing through Said Strainer comingr into 40 contact. 'with metals similar to or notless fictive than those of the t-m'bine or engine parts so 'that the corrosive. action of the steam .is expended in the, strainer.

4The invention further consists in the improvedstrainer hereinafter indicated.

' Figure 1 is a sectional front elevation through a strainer according to the present -invention- Fig. .3 is a sectional sido elevation at right -Ao angles to Fig. 1.

.salts present in tliefstearlnikln 'through the perforatet Lehm" in pa' *of Athe stra iuei- 'l platen In of the. tui-buie." '-lli'e. erwrosive aetion ofthe" the steam is reudeled'ehelnienlly-inactive-? upon. the. arts of' the:tu'ibil'iebfre"it IiS admitted thereto.,

'lhe 'aefion wheb tn kes"pli'iee'witliin the' derive appearsto oeflirin" illyaelt onelheiron plates Being` tta'el l' t tes fof" brass irild steel (land c "in -tl tively high v 'el' throughgthe'pe' o from the steam in this manne .nell y they easily removed and the forated brass and steel plates d and e and insurestheeiectiveness of the-strainer "1n rendering' the steam chemically inactive. The mechanical construction of the strainer fis such ,that the perforated brass and steel plates can be readily removed and replaced.v

It will beseen therefore that by this-invention the detrimental corrosive action' of the steam upon the metalof whichl the turbine parts are formed is'transferred from thetu'rbine parts themselves to a strainer where 'the 'products of thecorrosion can be parts attacked readily renewed as often as required. ,f

The actual construction of a strainer for the purpose of this invention it will be seen can be considerably .modified without in- "vojlving departure from the spirit of the Having now' particularly described and ascertained the nature of my invention and :in what manner the same is to be performed declare that what I claim is 1. A vdevice for rendering steam chemi- 1n combination, a

casing;v esteem in et `an a steam outlet to said Icasing', a plurality of compartments in "said casing, linlet and outlet apertures to eaeh of said compartments, all said inlet aperturesconimumcating by Va common inlet passage. with said casing inlet,4 and all A said outlet'passages communicating by a gcommon outlet assa e with said casing out-A- ilet; w 'greep 0 'the inlet .and outlet of each o lates between per orated said compartments, said plates being alternately of dif! ferent metals, the relation between the area for parallel flow through all said groups and the area of the inlet to said casing being such as to cause a high velocity of steam flow through said perforated plates.

2. A device for rendering steam chemically inactive comprising in combination, a

casing, a steam inlet and a steam outlet to said casing, a plurality of perforated plates between said inlet and said outlet, through which the steam is caused to pass said plates being alternately of dilerent metals,

.and means associated With said plates to cause the vsteam to traverse the perforations at high velocity.

3. A device for rendering steam chemically inactive, before admission to a turbine having blades composed of metals diiferent from the blade supporting means, comprising in combination, a casing, a steam inlet and a steam outlet to said casing, a plu CHARLES ALGERNON PARSONS.-

Witnesses:

FREDERICK GoRDoN HAY BEDFORD, ALBERT WILLIAM FARR. 

